Most towers are dismantled from the top down but due to the unusual design of 122 Leadenhall Street, this building is being dismantled from the ground up. The reason is that the floors are hung from a beam at the roof level which is supported by the core. Matthew White, British Land’s project director told the London Evening Standard that “The 15 storey building, constructed in 1965, was one of only four in London to have been constructed in this way — and the first to be demolished. Eventually the beam will be deconstructed at roof level leaving the core, which will be demolished from the top down.”